dlg99 opened a new pull request #10498:
URL: https://github.com/apache/pulsar/pull/10498


   ### Motivation
   
   Allow sink to rewind a topic to given offset and pause/resume consumer for 
given topic
   This is needed for https://github.com/apache/pulsar/pull/9927/ 
https://github.com/apache/pulsar/pull/9927/files#r595722189 
   
   ### Modifications
   
   SinkContext API:
   New methods to seek/pause/resume
   Matching implementations in ContextImpl
   
   Added ExtendedSourceContext interface (not public) to provide access to the 
PulsarSource's consumers.
   Updated ContextImpl and PulsarSource's implementations to provide this 
functionality.
   
   
   ### Verifying this change
   
   - [ ] Make sure that the change passes the CI checks.
   
   *(Please pick either of the following options)*
   
   This change added tests and can be verified as follows:
     - Added unit tests
   
   ### Does this pull request potentially affect one of the following parts:
   
   *If `yes` was chosen, please highlight the changes*
   
     - The public API: yes
   
   SinkContext added new methods, default implementation provided. 
   
   ### Documentation
   
     - Does this pull request introduce a new feature? yes
     - If yes, how is the feature documented? JavaDocs
   


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